Quite the same as one above, but worth to mention.
Blender has this very useful sphere in the Normal node and we have input fields what is very difficult to use.
No more. Add Mapping node and the null into it, preview Dot output, rotate the Null instead of sliders.

Attachments

Direction of the normal.gif (559.11 KiB) Viewed 84 times

Example.jpg (56 KiB) Viewed 84 times

10 - Easily Control Normal Direction in Normal Node

Quite the same as one above, but worth to mention.Blender has this very useful sphere in the Normal node and we have input fields what is very difficult to use.No more. Add Mapping node and the null into it, preview Dot output, rotate the Null instead of sliders.